About this number
(815) 389 is a landline based telephone number operated by Ameritech Illinois and is located in zip code 53511 in the city of Beloit, Illinois, which is in Rock County, and is in the Midwest. It has a Number Planning Area (NPA - also known as an Area Code) of 815 and Network Numbering Exchange (NXX - also known as a prefix) of 389. It has an Operating Company Number (OCN) of 9329. A Common Language Location Identifier (CLLI) of BELTWI01DS0. As well as a Local access and transport area (LATA) of 354. Zip code 53511 has a population of 48,929 as of the 2010 census.